HELLFEST HELLFEST ( Clisson, FRANCE ) 2014 HELLFEST ( Clisson, FRANCE ) 2015 HELLFEST ( Clisson, FRANCE ) 2016 HELLFEST ( Clisson, FRANCE ) 2017 HELLFEST ( Clisson, FRANCE ) 2018 HELLFEST ( Clisson, FRANCE ) 2019